My friend Robert Leggat, who has died aged 70, created one of the internet's earliest photographic history resources, a history of photography from its beginnings until the 1920s, www.rleggat.com/photohistory. Since its launch in 1996, the site has had nearly 10 million visitors. Robert researched and programmed the site, but also realised that there were people with greater expertise than he, and he was quick to revise pages on their advice.

He was born in Argentina, the son of missionaries, and was educated in Buenos Aires at the St Andrew's Scots school and St Alban's college. He moved to Britain in the 1950s and attended Wanstead county high school. He vividly recalled his excitement as an eight-year-old, seeing his first pictures emerging in the darkroom developing dish.

He trained as a teacher at Westminster College, Oxford, and taught at Battersea College, then at Bedford College of Education (now part of De Montfort University), where in 1976 he was appointed head of educational technology.

His book Photography in School: A Guide for Teachers was published in 1975. He was an examiner for O and A-level photography for a number of years, and was intimately involved in setting up the City and Guilds 9231 photography scheme. He authored several books which reflected his own interests in education, including Showing Off, Or Display Techniques for the Teacher (1970) and Lights Please! Using Projectors in the Classroom (1972).

In 1992 he became an internet consultant, developing websites, producing CD-Roms for education and teaching people how to use the internet.

Robert had a strong interest in music and was an accomplished singer. He was also a committed Christian. He is survived by his wife, Jill, their daughters, Pauline and Philippa, and two grandchildren.